LTC2635HMSE-LMO8#TRPBF

Overview

The LTC2635HMSE-LMO8#TRPBF is a quad 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, housed in a 10-lead MSOP package. It features an integrated precision reference with a full-scale output of 2.5V and a temperature coefficient of 10ppm/°C. The device operates on a single supply ranging from 2.7V to 5.5V and communicates via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical characteristics include rail-to-rail output buffers, guaranteed monotonicity over the –40°C to 125°C automotive temperature range, and a maximum integral nonlinearity error of ±0.5 LSB.

Feature Summary

• Quad 8-Bit Architecture: Four independent DAC channels with rail-to-rail buffered outputs.
• Integrated Precision Reference: Internal 2.5V full-scale reference with 10ppm/°C drift.
• Automotive Grade: Guaranteed monotonic operation across –40°C to 125°C.
• Power-On Reset Configuration: LMO suffix ensures reset to mid-scale internally while placing all DAC outputs in a high-impedance state upon power-up.

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Power Supply Margining
• Portable Equipment
• Automotive Systems

Procurement Notes

Verify the specific ordering suffix 'LMO' confirms the high-impedance power-on reset behavior, as this function is unique to this variant within the LTC2635 family. Ensure the MSOP package type matches the PCB footprint requirements. Confirm that the internal reference mode is selected for the 2.5V full-scale output specification rather than external reference operation.

Selection Notes

Select this component when four low-resolution, low-power DAC channels are required in a compact surface-mount package. The H-grade designation indicates suitability for automotive environments requiring operation up to 125°C. The LMO power-on reset option is critical for applications where safe, high-impedance initialization of analog outputs is necessary during system startup.

Part Context

This part belongs to the LTC2635 family of quad DACs available in 12-, 10-, and 8-bit resolutions. The 'H' suffix denotes the automotive temperature grade (-40°C to 125°C) and a 4.5V to 5.5V supply range for the -H variants, though the -L variants support 2.7V to 5.5V. The MSE suffix identifies the 10-lead MSOP package, distinct from the 16-pin QFN (UD) option.

Replacement Considerations

Direct pin-compatible replacements within the same family include other LTC2635 variants with different resolutions or reset configurations, such as LTC2635HMSE-LZ8#TRPBF (Zero-Scale reset) or LTC2635HMSE-MI8#TRPBF (Mid-Scale reset). Verify that the replacement maintains the required power-on state and supply voltage compatibility.